﻿/*
* [The "BSD Licence"]
* Copyright (c) 2011-2013 Chundong Gao
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

using System;
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Text;

namespace Gimela.Toolkit.CommandLines.Foundation
{
    public abstract class CommandLine : ICommandLine
    {
        #region Ctors

        protected CommandLine(string[] args)
        {
            this.Arguments = new ReadOnlyCollection<string>(args);
        }

        #endregion

        #region Properties

        public ReadOnlyCollection<string> Arguments { get; private set; }

        #endregion

        #region ICommandLine Members

        public virtual void Execute()
        {
            IsExecuting = true;
        }

        public virtual void Terminate()
        {
            IsExecuting = false;
        }

        public bool IsExecuting { get; protected set; }

        #endregion

        #region IDisposable Members

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")]
        protected virtual void Dispose(bool disposing)
        {
        }

        #endregion

        #region Events

        public event EventHandler<CommandLineUsageEventArgs> CommandLineUsage;

        [SuppressMessage("Microsoft.Design", "CA1030:UseEventsWhereAppropriate")]
        protected virtual void RaiseCommandLineUsage(object sender, string usage)
        {
            EventHandler<CommandLineUsageEventArgs> handler = CommandLineUsage;
            if (handler != null)
            {
                handler(sender, new CommandLineUsageEventArgs(usage));
            }
        }

        public event EventHandler<CommandLineDataChangedEventArgs> CommandLineDataChanged;

        [SuppressMessage("Microsoft.Design", "CA1030:UseEventsWhereAppropriate")]
        protected virtual void RaiseCommandLineDataChanged(object sender, string data)
        {
            EventHandler<CommandLineDataChangedEventArgs> handler = CommandLineDataChanged;
            if (handler != null)
            {
                handler(sender, new CommandLineDataChangedEventArgs(data));
            }
        }

        public event EventHandler<CommandLineExceptionEventArgs> CommandLineException;

        [SuppressMessage("Microsoft.Design", "CA1030:UseEventsWhereAppropriate")]
        protected virtual void RaiseCommandLineException(object sender, CommandLineException exception)
        {
            EventHandler<CommandLineExceptionEventArgs> handler = CommandLineException;
            if (handler != null)
            {
                handler(sender, new CommandLineExceptionEventArgs(exception));
            }
        }

        #endregion

        #region Output

        protected virtual void OutputText(string text)
        {
            RaiseCommandLineDataChanged(this, string.Format(CultureInfo.CurrentCulture,
              "{0}{1}", text, Environment.NewLine));
        }

        protected void OutputFormatText(string format, params object[] args)
        {
            RaiseCommandLineDataChanged(this, string.Format(CultureInfo.CurrentCulture, format, args));
        }

        #endregion

        #region Version

        public virtual string Version
        {
            get
            {
                StringBuilder sb = new StringBuilder();

                sb.AppendLine();

                sb.AppendLine(string.Format(CultureInfo.CurrentCulture, "{0} {1}",
                  VersionHelper.GetExecutingAssemblyName(),
                  VersionHelper.GetExecutingAssemblyVersion()));

                sb.AppendLine();

                sb.AppendLine(string.Format(CultureInfo.CurrentCulture, "Company  : {0}",
                  VersionHelper.GetExecutingAssemblyCompanyName()));

                sb.AppendLine(string.Format(CultureInfo.CurrentCulture, "Product  : {0}",
                  VersionHelper.GetExecutingAssemblyProductName()));

                sb.AppendLine(string.Format(CultureInfo.CurrentCulture, "Copyright: {0}",
                  VersionHelper.GetExecutingAssemblyCopyright()));

                return sb.ToString();
            }
        }

        #endregion
    }
}
